1. give off;

"the substance scintillated sparks and flashes"

2. reflect brightly;

"Unquarried marble sparkled on the hillside"

3. emit or reflect light in a flickering manner;

"Does a constellation twinkle more brightly than a single star?"

4. physics: fluoresce momentarily when struck by a charged particle or high-energy photon;

"the phosphor fluoresced"

5. be lively or brilliant or exhibit virtuosity;

"The musical performance sparkled"

"A scintillating conversation"

"his playing coruscated throught the concert hall"